I like the colours you're using, buuuut the overall use of pointlights could use some work.

Instead of doing two pointlights on either side of the window and having that little gap of darkness in the middle, try using one, slightly larger pointlight.

I usually find a radius of about 1.5~2 works to fill in the window with light, but it won't hit the ground or ceiling - which is good because the light touching the window probably won't be as bright as the light hitting the ground.

This is where the second pointlight comes in - I usually end up with a radius of about 4~5 for the second one; it should be in front of the wall so you can see the light's effects on the wall, floor, and ceiling. Because this one is larger and spreads further away from the light, it should be slightly dimmer than the first pointlight (about 25% dimmer). The light will still be really bright and seem to end slightly unnaturally.

A third pointlight can help with the slightly awkward transition from light-to-dark, I usually use a radius between 6~9, depending on the size of the room and the brightness of the source. This one should be quite a bit further away from the window than the other two, but not so far that it doesn't touch the window. I'd say about 1~2 units away from the nearest light.

I've included a .zip file of a map to show you exactly what I mean. Everything in it is labelled with explanations for why I use them. It's not very elaborate, but it should be useful.