Add more white color to Gimp layer

Question

How can I add more white color to a Gimp layer?

What about adding other colors to it?

Answer 1

I found the answer. I was searching for Color balance.

1. Select the layer
2. Click Tools -> Color Tools -> Color Balance
3. A new window will be opened:

Here you can modify the colors. If you need more white, uncheck the Preserve luminosity checkbox and move all the sliders to right.