I hate it when designers make layers fill layers.... I can' select them...

is there a way you can select a fill layer? (the way you select a normal layer (I mean w/o transparency) by doing ctrl-click in layer thumbnail after having selected marquee select tool.... is there a way to do that on a fill layer?

why can't they just do normal layers and apply color overlay etc...?? what is purpose of fill layers? (or whatever they're called.. I mean when two icons appear where layer name would go..)

thank you...