MS: No, we do not have Vyse with a paint brush in his hand, let alone Vyse found red, purple or sky-blue-pink handed.
SC: You are right, Stower. Vyse did not have a paintbrush in hand. But it seems the paintbrush was in the hands of Raven & Hill. This is what Walter Allen's account suggests. And you know what? It took me a while to find it but it's right there in Vyse's journal too--yes, his instruction to Raven and Hill to paint the marks in Campbell's Chamber. You have his handwritten journal--go have a look.
Now, I can hear the shrill of your scream right here in Glasgow. "PRESENT YOUR EVIDENCE". I will, Stower. But in my time, not yours.