Automate issuer overlay creation from ticker searches

components/charts/utils/chart-colors.ts

@@ -31,7 +31,7 @@ export function getPriceChangeColor(change: number): string {
  * Convert CSS variable to computed color value
  * Used for chart export since html-to-image can't render CSS variables
  */
-export function cssVarToColor(cssVar: string): string {
+function cssVarToColor(cssVar: string): string {
   if (typeof window === 'undefined') return cssVar;
 
   // If it's already a color value, return as-is