1 files changed, 10 insertions, 0 deletions
diff --git a/rst_helpers.lua b/rst_helpers.lua
index ade8b23..869b4d9 100644
--- a/rst_helpers.lua
+++ b/rst_helpers.lua
@@ -97,6 +97,16 @@ do
     local nocolon = (escaped_colon + (1 - colon))^1
     p.colon_right = nocolon * colon
     p.colon_keyval = C(nocolon) * colon * p.space^1 * C((1 - (p.space^0 * P(-1)))^1)
+
+    -- color expression matching for text roles
+    local digit = R"09"
+    local dot   = P"."
+    local colvalue = digit * dot * digit^1
+                   + digit
+                   + dot * digit^1
+    local coldelim = P"_" + P"-"
+    p.rgbvalues = P"rgb_"
+                * Ct( C(colvalue) * coldelim * C(colvalue) * coldelim * C(colvalue) )
 end
 
 function helpers.cell.create(raw, n_row, n_col, parent, variant)