Sea glass is from saltwater.  Beach glass is from freshwater.

According to Beachcombing Magazine,  the following is a list of most common to least common colors of sea and beach glass:

• brown

• clear

• kelly green

• sea foam green

• soft blue

• forest green

• amber

• lime green

• cornflower blue

• pink

• purple

• cobalt blue

• citron

• aquamarine

• gray

• black

• teal 

• yellow

• red

• orange

• turquoise/electric blue