Color Reaxyl® Rubar with Reaxyl® Rubar Color PG. In places where for aesthetic reasons a different color than the standard grey is desired, one can choose to color / shed the Reaxyl® Rubar for placement in the mass with Reaxyl® Rubar Color PG. Reaxyl® Rubar Color PG is a separately available liquid pigment for mixing under Reaxyl® Rubar. The recommended mixing ratio is 5% Reaxyl® Rubar Color PG or 50 ml Reaxyl® Rubar Color PG in 1 liter Reaxyl® Rubar. Reaxyl® Rubar Color PG is available as standard in 7 colors, namely: Omber, Sienna, Yellow, Green, Red, Blue and Black.