I have been testing some new glitter watercolors, love the pigmentation and the soft shimmer they have when viewed at an angle.  This coloring page is from this month’s Patreon / Gumroad Subscriptions (Flower 3 ways, I used the grayscale for this one)
Patreon https://www.patreon.com/ColoringPress
Gumroad https://gumroad.com/ColoringGifts
Paul Rubens Glitter Watercolors https://amzn.to/2LNvnhX