Can I paste color as an attribute in simple text tracks?

I have many subtitles that are white. I want to make them all yellow. When i do paste attributes, I dont see color as an option. With simple text (not Boris) in the timeline, can I copy and paste color?

I haven't tried this but you could try adding a filter like the 3Way CC and apply a color cast to the text. Then that filter can be copy>paste attributes to all text.