Did some poking around with Chrome dev tools. The RGBA value for the "unsent" text is #1d1c1db3. Normal "sent" (or "attempting to send but haven't yet decided

Did some poking around with Chrome dev tools. The RGBA value for the "unsent" text is #1d1c1db3. Normal "sent" (or "attempting to send but haven't yet decided sending will fail" is #1d1c1d. The RGBA value (alpha = 0.7) ends up being equivalent to #616161 when rendered over white background which the Slack default skin does. Demo for reference: https://jsfiddle.net/9smqe8y7/ https://jsfiddle.net/9smqe8y7/