How do I Background Brightness

Hi everyone,

I'm new at the forum, and game design, and grame programing....well

I'm looking in the forum for a effect(i dont know if it is a effect on construct) but i couldn't find any of this.

this is the thing, i have a layout really dark with a white sky, simulating de sun light, but, i cant find out how did i decrease or increase the brightness of this layer(sprite i dont know how to do this it sorry).

my idea is: if the character reach certain position of the canvas, the screen gets brighter or darker.

if anyone could help, i'll be greatful.

There are many ways to pull off something like this. Have a look on the following capx. I demonstrate 2 ways that take the player's position in relation to the layout's height and alter the opacity values of one "Sky" sprite and the brightness effect of an other sprite.

Thank you for the file, i will try on my project and post the results and/or doubts =)