theme - a unifying or dominant idea, motif
theme style - means the way in which the theme is expressed
A seaside theme can be implied in a quilt using the colours and tones of the coast — pale beiges, pale golds, tourquoises, blue greens, soft sandy yellows.
But if you use 'theme' fabrics - with shells, waves, other seaside feauture printed on them, the theme is obvious.
Have a browse through some magazines and select images that illustrate the following themes:
marriage
age birthday
teenage girl
toddler boy
golf male
golf female
travelling
Write each word in your workbook and as you look at the pictures, write down the colours/imagery used in the image which illustrate the theme.

Draw this block in 8 inch size in your workbook and glue fabrics to it to get blocks that illustrate as many of themes above as you can.