Well, young lady, I'm 61, though my eyesight has actually improved since
last year's cataract surgery. Be that as it may, you don't need to have the
Styles pane open to apply a style. You can assign a keyboard shortcut to it.
Go to Office button > Word Options > Customize, click the Keyboard Customize
button, select the Styles category and the name of the character style, and
assign a shortcut. For instance, Ctrl+Alt+B is usually available. (This is
the 2007 version of the procedure at
http://www.word.mvps.org/FAQs/Customization/AsgnCmdOrMacroToHotkey.htm.)
Also, you don't have to have the whole ribbon taking up space all the time.
Ctrl+F1 hides and unhides it, or you can double-click any of the tabs across
the top. While it's minimized, single-click any tab to choose one command
from it, and then it will hide again.
If you apply a style and the whole document changes, there's a setting you
need to turn off. Read
http://word.mvps.org/FAQs/Formatting/WholeDocumentReformatted.htm.
What I meant about searching is this: In the Find dialog you can click More
Format > Font and choose a color to search for, and it should find any
text that has that color. If you open a document from Word 2003 or earlier
that contains blue text created in the older version, it will be RGB
0-0-255. In Word 2007, when you select the blue patch in the palette as the
color to search for, it will be the new blue, RGB 0-112-192. That will cause
the match to fail, and the search won't find anything. You'd have to go into
the More Colors dialog and specify 0-0-255 instead. Worse, if you (or more
likely I) program a macro to search for blue text, the result may depend on
which version of Word assigned the font color. That's a PITA.