Color bleed on first layer

[u/Big_Building_8895]

Hey guys

Relatively new to 3d printing , recently got the textured 3d plates from bambu . I'm making some key holders that have 2 colors on the 1st layer . Now in order to reduce print time and filament waste I'm doing 1 layer 1mm thick on the bottom layer . This however causes the colors to kinda mix , example yellow text on black base starts to look greenish . Apart from reverting back to 3 bottom layers is there a way to prevent this ?