I replaced all 13 interior bulbs, and porch light with matching base LED lights. They were all much brighter no dull yellow glow. Frankly I enjoy the MH at night, I like to read, and I write, 4 novels published so far, and a crisp light helps. I don't have that feeling of camping out that the dull yellow glow gives.
I purchased all my LED from Amazon at around $11 each. Some may not want to invest that much money in lighting, but I learned a long time ago the RV is to enjoy, not worry about the resale value. I have way more invested in it than I'll ever get back, and it's been fun to do it, adding conveniences as I find the need.