That's an interesting modification! Increasing the working speed of the SAMASZ mowers to 25km/h can help improve efficiency and productivity in the fields. It's important to consider the impact of higher speeds on cutting quality, blade durability, and overall performance of the mowers. The color configuration can also give the mowers a personalized touch. Have you tested the mowers with the increased speed to see how they perform in the field? It would be great to hear more about your experience and any feedback you have on the modified mowers.