That's never been a feature - it's impossible to do such a thing with an HTML wallpaper I'm afraid. I have included all the colours in /Bundles/com.apple.TelephonyUI.
bottombarknobgray@2x.png (or bottombarknobgray.png for 3G(S) phones) is the file which is used for the lock slider. Select which colour you want and remove the _colour suffix.
That's not an issue, that's you not reading the instructions I'm afraid. If you read them, it clearly tells you that
file:// for Safari is required to set up. Believe me, 3.1 works - I've got a tonne of emails and several donations to prove it.
1. Download
file:// for Safari from Cydia, and install.
2. Visit the following address in Safari:
file:///Library/Themes/AnalockHD.theme/config.html
3. Set your Yahoo! weather code in the top box (see below).
Instructions on how to find your Yahoo! Weather Code - Click Here.