Related Clues:

• Pre-painting application
• Word with "inner" or "test"
• Painter's utensil
• London Underground
• Deck protector
• Paint board
• Pack of toothpaste; type of train
• Range of colours showing taste, some say
• Allow in the head's painting equipment
• Artist's paint board
• Transport system bringing objection around England's capital?
• Long hollow cylinder
• Armour in a selection of colours
• Colourless article banned by gallery's colourful board?
• On which paint spread without hindrance