Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Built | Wheels | Fuel/ Trans | Status | Colour |
| --- | --- | --- | --- | --- | --- |
| Ted | Lister 1944 | 0-4-0 | Diesel-Mechanical | Under Rebuild | Brown |
| The Cub/John | Minirail 1954 | 0-4-0 Bo | Diesel-Hydraulic | Stored | Grey undercoat |
| Battison | Battison 1958 | 2-6-4DE | Diesel-Electric | Out of Service | LNER Black |
| Dudley | G & S Light Engineering 1946 | Bo-Bo | 4* Petrol-Mechanical | On Display | Grey & Red |
| DA1 | Bush Mill Railway 1986 | 0-4-0 | Diesel-Mechanical | In Service | Royal Blue with white linings |
| KD1 | Unknown | Articulated | Diesel Electric | Long term restoration, Stored | Ran in a red livery previously |
Question:
What is the color of the locomotive built by Minirail 1954?
Answer:
Grey undercoat