Image Menu: 

Flip rotate: This option is used to rotate the selected object horizontally, vertically and by angle.

Stretch /skew:  This option is used Stretch /skew the selected object horizontally or vertically.

Invert colors: This option is used to change the colors of the paint randomly.

Attributes: This option is used to set the paint environment either in black and white colors or Colors mode.

Clear image: To clears all the paint of the file.

Draw Opaque: This option is used avoid the background color. 

Colors Menu:
Edit colors:  This option is used to edit our own custom colors.