It's nice to have some stuff organized, so this is my attempt to distinct Firefox profiles for development and regular browsing. This way my dev addons won't intefere with regular visited websites and vice-versa. Hope You like it.

Default:

Just standard Firefox full-blown with addons and pinned social apps ;]

Dev [PHP]:

Development addons: (also quite standard stuff. but included list if anybody is intrested)

Zend Studio Toolbar (moved to top for maximum realestate)
WebDeveloperToolbar
Firebug
FirePHP
FireQuery
Fiddler
FormFox
ColorZilla

Desktop shortcuts for profiles (ommits Profile Manager)

Default profile shortcut:

"C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -P default -no-remote

Development profile shortcut: (profile is named 'dev')

"C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -P dev -no-remote

Final touch:
Green Firefox Button for dev profile ;]

Go to

c:\Users\[username]\AppData\Roaming\Mozilla\Firefox\Profiles\[profilefolder]\

Create
'chrome' folder and 'userChrome.css'

c:\Users\[username]\AppData\Roaming\Mozilla\Firefox\Profiles\[profilefolder]\chrome\userChrome.css

Put this css to userChrome.css

#appmenu-button {
    background: linear-gradient(to bottom, #bfd255 0%,#8eb92a 50%,#72aa00 51%,#9ecb2d 100%) !important;
}
#appmenu-button .button-text {
    color: #fff !important;
}

And, voila! ;]

PS. Lots of desktop applications has problems with multiple FF profiles when FF is set as default browser (can't open links from apps) so I just use Chrome as default.