Can you share your budget for changes?

Your kitchen is very pretty, but I can see how insufficient lighting and dark cabinets could be frustrating. (I love the cabinets by the way.)

I do think some brushed nickel hardware can add a bit of bright jewelry to your kitchen, but it won't make a big difference in the overall brightness of the space.

In terms of lighting, I think megs1030's suggestion for under cabinet lighting is a great one. That would probably make a pretty substantial difference. Consider hiring an electrician to add recessed lighting in the ceiling. It kind of looks like there might already be one fixture near your ovens.

You could consider painting the walls a lighter color. What you have now looks really nice with the finishes, but it's a mid-tone color so something light would bring some more brightness to the space.

You could replace your countertops with something much brighter - closer to white. Obviously that would be a substantial cost to replace what are already lovely countertops just to bring more brightness to the space. Probably much more cost effective to just add lighting.

One more suggestion that is a bit of a personal choice: you have a lot of items on your countertops. It's not messy or cluttered in any way, but there are a lot of items that could be tucked away potentially. I find my kitchen looks brighter when the countertops are almost completely clear. Put your knives in a drawer instead of a countertop block. Put whatever appliance that is over the dishwasher into the pantry. Put the oils into the pantry or in a cabinet. Obviously this changes the function of your kitchen so it may not be for you.