Tumeric and Fabric Dye Stains on my Laptop?

I had turmeric stains on the corners of my laptop. I dipped a microfiber cloth (red in color) into the mixture of water and isopropyl alcohol. It didn't remove the stain, but added red color to my laptop. On one edge, I rubbed isopropyl alcohol (without diluting with water) and it worked, but on the right corner, it didn't work. I see that grey color left on the corner. I'm pretty embarrassed now. I'm tired of trying too many things. Please suggest to me something. Thanks in advance.