diff --git a/runtime/themes/yo.toml b/runtime/themes/yo.toml
new file mode 100644
index 000000000..55c805204
--- /dev/null
+++ b/runtime/themes/yo.toml
@@ -0,0 +1,125 @@
+# Author: Michael McClintock <michael.mcclintock@hey.com>
+# License: MIT
+
+# Yo - Themes for Helix inspired by Zenbones & Alabaster with Radix Colors.
+# https://github.com/mrmcc3/yo-theme-helix
+
+# background/text
+"ui.background" = { fg = "p11", bg = "p2" }
+"ui.background.separator" = { fg = "p7" }
+"ui.text" = { fg = "p11" }
+"ui.text.focus" = { fg = "p12", modifiers = ["bold"] }
+
+# popups/menus
+"ui.window" = { fg = "p7" }
+"ui.popup" = { fg = "p12", bg = "p4" }
+"ui.popup.info" = { fg = "p12", bg = "p2" }
+"ui.text.info" = { fg = "p12", bg = "p2" }
+"ui.help" = { fg = "p12", bg = "p2" }
+"ui.menu" = { fg = "p11", bg = "p4" }
+"ui.menu.selected" = { fg = "p12", modifiers = ["bold"] }
+"ui.menu.scroll" = { fg = "p8", bg = "p4" }
+"ui.picker.header.column" = { underline.style = "line" }
+
+# cursor/selection
+"ui.cursor" = { fg = "p2", bg = "p11" }
+"ui.cursor.insert" = { fg = "p2", bg = "keyword" }
+"ui.cursor.select" = { fg = "p2", bg = "p12" }
+"ui.cursor.match" = { fg = "p12", modifiers = ["bold"] }
+"ui.cursor.primary" = { fg = "p2", bg = "p11", modifiers = ["bold"] }
+"ui.cursor.primary.insert" = { fg = "p2", bg = "keyword", modifiers = ["bold"] }
+"ui.cursor.primary.select" = { fg = "p2", bg = "p12", modifiers = ["bold"] }
+"ui.selection" = { bg = "p4" }
+"ui.selection.primary" = { bg = "p5" }
+"ui.cursorline.primary" = { bg = "p3" }
+"ui.cursorcolumn.primary" = { bg = "p3" }
+
+# line numbers / diff
+"ui.linenr" = { fg = "p7" }
+"ui.linenr.selected" = { fg = "p11" }
+diff = { fg = "p8" }
+
+# bufferline/statusline
+"ui.bufferline" = { fg = "p11", bg = "p4" }
+"ui.bufferline.active" = { fg = "p2", bg = "p11" }
+"ui.statusline" = { fg = "p11", bg = "p4" }
+"ui.statusline.inactive" = { fg = "p11", bg = "p2" }
+"ui.statusline.normal" = { fg = "p2", bg = "p11" }
+"ui.statusline.insert" = { fg = "p2", bg = "keyword" }
+"ui.statusline.select" = { fg = "p2", bg = "p12" }
+"ui.statusline.separator" = { fg = "p7" }
+
+# virtual
+"ui.virtual" = { fg = "p6" }
+"ui.virtual.ruler" = { bg = "p3" }
+"ui.virtual.inlay-hint" = { fg = "p7", underline.style = "dotted" }
+"ui.virtual.jump-label" = { fg = "p12", modifiers = [
+  "bold",
+], underline = { style = "curl", color = "info" } }
+
+# diagnostics
+error = { fg = "error", modifiers = ["bold"] }
+warning = { fg = "warning", modifiers = ["bold"] }
+info = { fg = "info", modifiers = ["bold"] }
+hint = { fg = "info", modifiers = ["bold"] }
+"diagnostic.error" = { fg = "error", modifiers = ["bold"] }
+"diagnostic.warning" = { fg = "warning", modifiers = ["bold"] }
+"diagnostic.info" = { fg = "info", modifiers = ["bold"] }
+"diagnostic.hint" = { fg = "info", modifiers = ["bold"] }
+# "diagnostic.unnecessary" = {}
+# "diagnostic.deprecated" = {}
+
+# code
+comment = { fg = "info" }
+keyword = { fg = "keyword" }
+operator = { fg = "keyword" }
+string = { fg = "string" }
+constant = { fg = "constant" }
+"string.special.symbol" = { fg = "constant" }
+variable = { fg = "p10" }
+namespace = { fg = "p10" }
+punctuation = { fg = "p9" }
+"punctuation.delimiter" = { fg = "p8" }
+function = { fg = "p11" }
+attribute = { fg = "p10" }
+tag = { fg = "keyword" }
+label = { fg = "p12" }
+constructor = { fg = "p12" }
+type = { fg = "p12" }
+
+# markup
+"markup.bold" = { modifiers = ["bold"] }
+"markup.italic" = { modifiers = ["italic"] }
+"markup.strikethrough" = { modifiers = ["crossed_out"] }
+"markup.heading" = { fg = "p12", modifiers = ["bold"] }
+"markup.heading.marker" = { fg = "p8" }
+"markup.list" = { fg = "p8" }
+"markup.link.url" = { underline.style = "line" }
+"markup.link.label" = { underline.style = "dotted" }
+# "markup.link.text" = {}
+"markup.quote" = { fg = "p10" }
+# "markup.raw" = {}
+
+[palette] # https://www.radix-ui.com/colors
+
+# grayDark
+p1 = "#111111"
+p2 = "#191919"
+p3 = "#222222"
+p4 = "#2a2a2a"
+p5 = "#313131"
+p6 = "#3a3a3a"
+p7 = "#484848"
+p8 = "#606060"
+p9 = "#6e6e6e"
+p10 = "#7b7b7b"
+p11 = "#b4b4b4"
+p12 = "#eeeeee"
+
+error = "#ec5d5e"   # redDark-10
+warning = "#ff801f" # orangeDark-10
+info = "#3b9eff"    # blueDark-10
+
+string = "#33b074"   # greenDark-10
+constant = "#9a5cd0" # purpleDark-10
+keyword = "#ae8c7e"  # bronzeDark-10
diff --git a/runtime/themes/yo_berry.toml b/runtime/themes/yo_berry.toml
new file mode 100644
index 000000000..1aaac1a92
--- /dev/null
+++ b/runtime/themes/yo_berry.toml
@@ -0,0 +1,31 @@
+# Author: Michael McClintock <michael.mcclintock@hey.com>
+# License: MIT
+
+# Yo - Themes for Helix inspired by Zenbones & Alabaster with Radix Colors.
+# https://github.com/mrmcc3/yo-theme-helix
+
+inherits = "yo"
+
+[palette]
+
+# mauveDark
+p1 = "#121113"
+p2 = "#1a191b"
+p3 = "#232225"
+p4 = "#2b292d"
+p5 = "#323035"
+p6 = "#3c393f"
+p7 = "#49474e"
+p8 = "#625f69"
+p9 = "#6f6d78"
+p10 = "#7c7a85"
+p11 = "#b5b2bc"
+p12 = "#eeeef0"
+
+error = "#ee518a"   # crimsonDark-10
+warning = "#ffff57" # yellowDark-10
+info = "#3b9eff"    # blueDark-10
+
+string = "#0eb39e"   # teal-10
+constant = "#b658c4" # plum-10
+keyword = "#9eb1ff"  # indigo-11
diff --git a/runtime/themes/yo_light.toml b/runtime/themes/yo_light.toml
new file mode 100644
index 000000000..15c149184
--- /dev/null
+++ b/runtime/themes/yo_light.toml
@@ -0,0 +1,34 @@
+# Author: Michael McClintock <michael.mcclintock@hey.com>
+# License: MIT
+
+# Yo - Themes for Helix inspired by Zenbones & Alabaster with Radix Colors.
+# https://github.com/mrmcc3/yo-theme-helix
+
+inherits = "yo"
+
+"ui.virtual.inlay-hint" = { fg = "p8", underline.style = "dotted" }
+"markup.quote" = { fg = "p9" }
+
+[palette]
+
+# gray
+p1 = "#fcfcfc"
+p2 = "#f9f9f9"
+p3 = "#f0f0f0"
+p4 = "#e8e8e8"
+p5 = "#e0e0e0"
+p6 = "#d9d9d9"
+p7 = "#cecece"
+p8 = "#bbbbbb"
+p9 = "#8d8d8d"
+p10 = "#838383"
+p11 = "#646464"
+p12 = "#202020"
+
+error = "#dc3e42"   # red-10
+warning = "#ef5f00" # orange-10
+info = "#0588f0"    # blue-10
+
+string = "#2b9a66"   # green-10
+constant = "#8347b9" # purple-10
+keyword = "#957468"  # bronze-10