This specific negative is 15 years old. The colours have been preserved.
Essentially the procedure is the same as for B/W. The negative was photographed using a slide projector at a speed of 1/200 sec. The camera was set for tungsten illumination.
1. The initial shot needed cropping and rotating . 2. Then the colour scheme was inverted. 3. The challenge here is to balance the colours and tones. I prefer to work by adjusting the tone levels for each colour separately and then make overall adjustments of the whole colour scheme. I avoid using the brightness/contrast tool. 4. The next step is to control the colour hue/saturation in order to obtain a natural colour scheme. As a rule, the blue colour will need desaturation.