Do what I did...
Get some factory touch up paint in your color.
Go to a sign making shop, and have them cut out some vinyl circles big enough to cover the mounting holes, about 1/8 to 1/16 bigger than the hole itself (to seal the edges). They will come pre-cut on a sheet (mine were at least).
Paint the circles with the touch up paint while they're still on the cut sheet. When the paint is dry, peel off 4 and stick them over the holes.
A cheap fix, won't leak, looks better (IMO) than bolts sticking off the lid surface, and they last a long time (mine have been on for over a year).
You can even wax/polish over them to keep them shiny.